[Blindness prevention and treatment in Hainan District of Guangdong Province (author's transl)].
D001766:Blindness / Q000209:etiology / Q000517:prevention & control* / Q000628:therapy; D002681:China; D005260:Female; D006801:Humans; D008297:Male; D008403:Mass Screening; D014141:Trachoma / Q000453:epidemiology